− | * [http://www.sona-systems.com/help/limesurvey.aspx http://www.sona-systems.com/help/limesurvey.aspx]
| + | If you want to use Sona to invite people to take the survey, please use the [http://www.sona-systems.com/help/limesurvey.aspx manual provided bij Sona]. |